<template>
      <div class="video-player-border">
            <video-player
                        class="video-player vjs-custom-skin"
                        ref="videoPlayer"
                        name="videoPlayer"
                        id="video"
                        :playsinline="true"
                        :globalOptions="globalSetting"
                        :options="playerOptions"
                        @play="onPlayerPlay($event)"
                        @pause="onPlayerPause($event)"
                        @ended="onPlayerEnded($event)"
                        @waiting="onPlayerWaiting($event)"
                        @timeupdate="onPlayerTimeupdate($event)"
                        @statechanged="playerStateChanged($event)"
                        @canplaythrough="onPlayerCanplaythrough($event)"
                        @ready = "playerReadied"
                  >
            </video-player>
            <!-- {{MovieSrc}} -->
      </div>
</template>
<script>
import { videoPlayer } from "vue-video-player";
import "video.js/dist/video-js.css";
import "vue-video-player/src/custom-theme.css";
      export default {
            name: "showVideo",
            components: {
                  videoPlayer
            },
            data() {
                  return {
                        playTime:'',
                        current:'',
                        playerOptions: {
                              playbackRates: [0.5, 1.0, 1.5, 2.0], // 可选的播放速度
                              autoplay: false, // 如果为true,浏览器准备好时开始回放。
                              muted: false, // 默认情况下将会消除任何音频。
                              loop: false, // 是否视频一结束就重新开始。
                              preload: "auto", // 建议浏览器在<video>加载元素后是否应该开始下载视频数据。auto浏览器选择最佳行为,立即开始加载视频（如果浏览器支持）
                              language: "zh-CN",
                              aspectRatio: "16:9", // 将播放器置于流畅模式，并在计算播放器的动态大小时使用该值。值应该代表一个比例 - 用冒号分隔的两个数字（例如"16:9"或"4:3"）
                              fluid: true, // 当true时，Video.js player将拥有流体大小。换句话说，它将按比例缩放以适应其容器。
                              sources: [
                                    {
                                    type: "video/mp4", // 类型
                                    src:this.MovieSrc // url地址
                                    }
                              ],
                              poster: this.MovieCover, // 封面地址
                              notSupportedMessage: "此视频暂无法播放，请稍后再试", // 允许覆盖Video.js无法播放媒体源时显示的默认信息。
                              controlBar: {
                                    timeDivider: true, // 当前时间和持续时间的分隔符
                                    durationDisplay: true, // 显示持续时间
                                    remainingTimeDisplay: false, // 是否显示剩余时间功能
                                    fullscreenToggle: true // 是否显示全屏按钮
                              },
                        },
                        //164行,为了使控制台不报错而加上
                        globalSetting:{controls:true},
                  };
            },
      props:['MovieSrc','PlayerPause','MovieCover'],   
      watch:{          
            //关闭对话框暂停视频      
            PlayerPause(val){
                  if(val === 'push'){    
                        this.$refs.videoPlayer.player.pause();
                        return ;                 
                  }
            }
      },
      beforeRouteLeave(){
            this.$refs.videoPlayer.player.pause()
      },
      methods: {
            // 播放回调
            onPlayerPlay(player) {
                  console.log("player play!", player);
            },

            // 暂停回调
            onPlayerPause(player) {
                  console.log("player pause!", player);
            },

            // 视频播完回调
            onPlayerEnded($event) {
                  console.log(player);
            },
            // DOM元素上的readyState更改导致播放停止
            onPlayerWaiting(player) {
                  let time = localStorage.getItem("cacheTime")
                  if(player.cache_.currentTime - Number(time) > 0.1){
                        this.current = Number(time)
                        this.playerReadied(player)
                  }else{
                        this.current = player.cache_.currentTime
                  }
            },

            // 已开始播放回调
            onPlayerPlaying($event) {
                  // console.log(player)
            },

            // 当播放器在当前播放位置下载数据时触发
            onPlayerLoadeddata($event) {
                  // console.log(player)
            },

            // // 当前播放位置发生变化时触发。
            onPlayerTimeupdate(player) {
                  this.playTime = player.cache_.currentTime
                  let playTime = player.cache_.currentTime
                  setTimeout(function () {
                        localStorage.setItem("cacheTime",playTime)
                  },500)


                  let time = localStorage.getItem("cacheTime")
                  if(player.cache_.currentTime - Number(time) > 2){
                        this.current = Number(time)
                        this.playerReadied(player)
                  }else{
                        this.current = player.cache_.currentTime
                  }
            },

            //媒体的readyState为HAVE_FUTURE_DATA或更高
            onPlayerCanplay(player) {
                  // console.log('player Canplay!', player)
            },

            //媒体的readyState为HAVE_ENOUGH_DATA或更高。这意味着可以在不缓冲的情况下播放整个媒体文件。
            onPlayerCanplaythrough(player) {
                  // console.log('player Canplaythrough!', player)
            },

            //播放状态改变回调
            playerStateChanged(playerCurrentState) {
                  // console.log('player current update state', playerCurrentState)
            },

            //将侦听器绑定到组件的就绪状态。与事件监听器的不同之处在于，如果ready事件已经发生，它将立即触发该函数。。
            playerReadied(player) {
                  // console.log('example player 1 readied', player);
                  player.currentTime(this.current)
            }
      }
};
</script>

<style scope>
      .vjs-custom-skin > .video-js .vjs-big-play-button {
            background-color: rgba(0,0,0,0.45);
            font-size: 3.0em;
            /* border-radius: 50%; */
            /* 播放按钮高度 */
            height: 1.5em !important;
            line-height:1.5em !important;
            margin-top: -1em !important;
      }
      /*这里用了第三方vue-video-player插件，但这个插件有bug，设置globalSetting:{controls:true}隐藏进度条不生效，故可设置插件样式进行隐藏vjs-progress-contro*/
      /* 隐藏进度条 */
      /* .vjs-progress-control {         
            visibility:hidden;        
      } */
</style>